> you don’t—you never—pick and choose based on “that thing is obsolete and no one uses it anyway This might make sense for a complete implementation, but in re

> you don’t—you never—pick and choose based on “that thing is obsolete and no one uses it anyway This might make sense for a complete implementation, but in reality...no one would implement a useless API. Also, if truly no one used it, it would simply not exist (e.g. `with` in module mode), a new implementation of some spec will always pick and choose based on utility and use-cases.